Locking clamp-bolt.



E. 0. EDWARDS. A

LOCKING CLAMP BOLT, APPLICATION IILBD MAR.10, 1913.

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EVAN O. EDWARDS, OF CI-IEI-IALIS, WASHINGTON.

LOCKING CLAMP-BOLT.

may be securely fastened and held in their.

proper position against the sides of abutting rails without the use ofscrew-threaded bolts and nuts that have been used heretofore. I attainthese objects by devices illustrated in the accompanying drawings,wherein- Figure 1 is a view in side elevation of a rail-joint embodyingmy invention, Fig. 2 is a view of the same in horizontal section onbroken line a', w of Fig. 1, and Fig. 3 is a view of the same invertical section on the broken line y, y of Fig. 1.

In the accompanying drawings wherein like reference numerals denote likeparts, 5, 5 are ends of two abutting rails whose webs are provided withslotted holes each of which holes is enlarged at one of its endssufficiently to allow the knob 8 on the end of a bolt 9 to pass throughit, the smaller slotted portion of the hole being only large enough toallow the body of the bolt to move freely within it.

10, 10 are fish-plates of the usual type disposed on either side of theabutting rails 5, each having slotted holes 11 and 12 respectively,similar to, and disposed to register with, the slotted holes 6 in thewebs of the rails 5.

13, 13 are wedge shaped plates each of which has a slotted hole 14:extending longitudinally thereof and each of which slot-ted holes isenlarged at its end nearest the thin end of the wedge shaped plate 13 topermit the passage through it of the knob 8. Each wedge shaped plate 13is provided with teeth on its inclined surface, as illustrated in Fig.2, and each slotted hole 14 has its outer edge l5 rounded olf to fit thecurved surface of the knob as illustrated in Fig. 3.

In the construction of my rail-joint one of the fish-plates 10, 10 isplaced on each side of the two rail ends 5 in the usual manner, theslotted holes 11 and 12 being made to register with the slotted holes 6,6 respectively. Threadless bolts 9, each having a Specification ofLetters Patent.

.Application filed March 10, 1913.

PatentedDec. 23, 1913. serial No. 753,202.

knob 8 at one of its ends, are thrust through the enlarged portion ofthe slotted holes until the head of thebolt 9 rests against one of fsaid fish-plates 10 and the knob end of the bolt projects outwardly fromthe other of said fish-plates. One of the wedge shaped plates 13 havinga slotted hole 14 is so placed on the projecting end of the bolt 9 thatits smooth lflat surface rests against the sh-plate 10 while theinclined toothed surface of a similar wedge shaped plate 13 isoppositely disposed on the bolt 9. The knobs 8 having been thrustthrough the enlarged portions of the slotted holes of the wedge shapedplates 13, said plates 13 then may be moved to bring the bolts 9 withinthe .smaller portions of the slotted holes 14, thus hammering on thelarge ends of the plates 13 to cause said plates 13 to wedge tightlytogether, in which positions they are held by the teeth on their opposedsurfaces.

In that form of my invention illustrated in the accompanying drawings,two bolts only are shown as holding the fish-plates, but, obviously, anydesired number may be used in connection with each joint.

If the rail-joints become loose when subjeeted to use it is easy totighten them by hammering on the ends of the wedge shaped plates 13.

Obviously the holes through the lishplates and the holes through thewebs of rails need not be oblong, but they must be large enough topermit the head or knob S of one end of a bolt to pass through them.

Manifestly minor changes in the details of construction of my inventionmay be made within the scope of the appended claims without departingfrom the spirit thereof or sacrificing any of its advantages.

Vhat I claim is:

1. In a rail-joint of the ,class described, the combination wit-h a pairof fish-plates each fish-plate of which pair is provided with aplurality of oblong bolt-holes that are each enlarged in one portiontopermit the passage of a bolt-head through such enlarged portion, andeach of which {ish-plates is adapted to be disposed against the webs ofabutting end portions of rails, of a plu-` rality of threadlessdouble-headed bolts, and a pair of wedges each wedge of which isprovided with an oblong holeenlarged in one .portion and each of whichis further provided with a serrated surface on one V'of' Vits sideswhereby said doubleleaded bolts' may be disposed in association withsaid pair of fish-plates and said wedges to form rail joint.

In a rail joint of the class described, the combination with a pair ofiish-plates, each sh plate of which Ipair is provided With bolt holes,of a plurality oi doublehaded belts one; head of, 'eachv or whigh boltsi5 ef e' size; weder@ it .t0 WSS thrgh afy of said bolt holes 'in saidi,fish-plates and a plurality Oi pairs 0f vedgsonl wedsef each pair ofwhich is provided with an' obj 1912s' hele that is enlarged' in 611e re?EVAN O- EDWARDS. Witnesses:

191e FRD W. KELLY, FRANK' Westra G-FPief. this retest may be .Obtainedfd: nv; cents; sect1 by @einem @1.19 Geelimr 017 Paints Washington; D. G

